19
8.3.1 Three minutes delay at restart for
compressor
1 minute delay for the 1
st
time stand-up and 3
minutes delay for others.
8.3.2 Temperature protection of compressor
top
The unit will stop working when the compressor
top temp. protector cut off, and will restart after
the compressor top temp. protector restart.
8.3.3 Temperature protection of compressor
discharge
Compressor discharge temp. T5>115
℃
for 5s,
compressor stops.
8.3.4 Fan speed is out of control
When indoor fan speed keeps too low (300RPM)
for certain time, the unit will stop and the LED will
display the failure
8.3.5 Inverter module protection
The Inverter module has a protection function
about current, voltage and temperature. If these
protections happen, the corresponding code will
display on indoor unit and the unit will stop
working.
8.3.6 Indoor fan delayed open function
When the unit starts up, the louver will be active
immediately and the indoor fan will open 7s later.
If the unit runs in heating mode, the indoor fan
will be also controlled by anti-cold wind function.
8.3.7 Compressor preheating functions
Preheating permitting condition:
When T4(outdoor ambient temperature)
＜
3°C,
the preheating function will be activated.
8.3.8 Sensor protection at open circuit and
breaking disconnection.
When there’s only one temperature sensor in
malfunction , the air conditioner will keep working
but show the error code, in case of any
emergency use.
When there’s more than one temperature sensor
in malfunction, the air conditioner will stop working.
8.4 Operation Modes and Functions
8.4.1 Fan mode
(
1) Outdoor fan and compressor stop.
(2) Temperature setting function is disabled,
and no setting temperature is displayed.
(3) Indoor fan can be set to high/med/low/auto.
(4) The louver operates same as in cooling
mode.
(5) Auto fan:
a
b
c
d
T1
e
8.4.2 Cooling Mode
8.4.2.1 Compressor running rules
When T1-Ts<ΔT -2
℃
, the compressor will stop,
when T1
—
Ts >ΔT -0.5
℃，
the compressor will be
activated.
ΔT is the programmed parameter of temperature
compensation.
When the AC run in mute mode, the compressor
will run with low frequency.
When the current is more than setting value, the
current protection function will be activated, and
the compressor will stop.
8.4.2.2 Outdoor fan running rules
The outdoor unit will be run at different fan speed
according to T4.
For different outdoor units, the fan speeds are
different.
T4
A+
A
B
C
D
E
8.4.2.3 Indoor fan running rules
In cooling mode, indoor fan runs all the time and
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